| Afton Municipal (AFO) | Afton | WY | Cascade to Afton Municipal |
| Ashland Municipal-Sumner Parker Field (AHM) | Ashland | OR | Cascade to Ashland Municipal-Sumner Parker Field |
| Walla Walla Regional (ALW) | Walla Walla | WA | Cascade to Walla Walla Regional |
| Austin (ASQ) | Austin | NV | Cascade to Austin |
| Astoria Regional (AST) | Astoria | OR | Cascade to Astoria Regional |
| Oliver (AU3) | Oliver | BC | Cascade to Oliver |
| Battle Mountain (BAM) | Battle Mountain | NV | Cascade to Battle Mountain |
| King County International Boeing Field (BFI) | Seattle | WA | Cascade to King County International Boeing Field |
| Billings Logan International (BIL) | Billings | MT | Cascade to Billings Logan International |
| Baker City Municipal (BKE) | Baker City | OR | Cascade to Baker City Municipal |
| Brigham City Regional (BMC) | Brigham City | UT | Cascade to Brigham City Regional |
| Burns Municipal (BNO) | Burns | OR | Cascade to Burns Municipal |
| Boise Air Terminal Gowen Field (BOI) | Boise | ID | Cascade to Boise Air Terminal Gowen Field |
| Miley Memorial Field (Big Piney) (BPI) | Big Piney | WY | Cascade to Miley Memorial Field (Big Piney) |
| Kaslo (BR2) | Kaslo | BC | Cascade to Kaslo |
| Skypark (BTF) | Bountiful | UT | Cascade to Skypark |
| Bert Mooney (BTM) | Butte | MT | Cascade to Bert Mooney |
| Burley Municipal (BYI) | Burley | ID | Cascade to Burley Municipal |
| Bozeman Yellowstone International (BZN) | Bozeman | MT | Cascade to Bozeman Yellowstone International |
| Creston Valley Regional (CFQ) | Creston | BC | Cascade to Creston Valley Regional |
| Challis (CHL) | Challis | ID | Cascade to Challis |
| Chiloquin State (CHZ) | Chiloquin | OR | Cascade to Chiloquin State |
| Chehalis-Centralia (CLS) | Chehalis | WA | Cascade to Chehalis-Centralia |
| Yellowstone Regional (COD) | Cody | WY | Cascade to Yellowstone Regional |
| Coeur D'alene/Pappy Boyington Field (COE) | Coeur D'Alene | ID | Cascade to Coeur D'alene/Pappy Boyington Field |
| Cut Bank International (CTB) | Cut Bank | MT | Cascade to Cut Bank International |
| Corvallis Municipal (CVO) | Corvallis | OR | Cascade to Corvallis Municipal |
| Dillon (DLN) | Dillon | MT | Cascade to Dillon |
| The Dalles Municipal/Columbia Gorge Regional (DLS) | The Dalles | OR | Cascade to The Dalles Municipal/Columbia Gorge Regional |
| Delta Municipal (DTA) | Delta | UT | Cascade to Delta Municipal |
| Cardston (EA6) | Cardston | AB | Cascade to Cardston |
| Pangborn Memorial (EAT) | Wenatchee | WA | Cascade to Pangborn Memorial |
| Claresholm Industrial (EJ4) | Claresholm | AB | Cascade to Claresholm Industrial |
| Elko Regional/Harris Field (EKO) | Elko | NV | Cascade to Elko Regional/Harris Field |
| Bowers Field (ELN) | Ellensburg | WA | Cascade to Bowers Field |
| Ely/Yelland Field (ELY) | Ely | NV | Cascade to Ely/Yelland Field |
| Kemmerer Municipal (EMM) | Kemmerer | WY | Cascade to Kemmerer Municipal |
| Wendover (ENV) | Wendover | UT | Cascade to Wendover |
| Ephrata Municipal (EPH) | Ephrata | WA | Cascade to Ephrata Municipal |
| Eureka (EUE) | Eureka | NV | Cascade to Eureka |
| Mahlon Sweet Field (EUG) | Eugene | OR | Cascade to Mahlon Sweet Field |
| Evanston-Uinta County Burns Field (EVW) | Evanston | WY | Cascade to Evanston-Uinta County Burns Field |
| Fort Macleod (EY3) | Fort Macleod | AB | Cascade to Fort Macleod |
| Fort Bridger Airport (FBR) | Fort Bridger | WY | Cascade to Fort Bridger Airport |
| Glacier Park International (FCA) | Kalispell | MT | Cascade to Glacier Park International |
| Fallon Municipal (FLX) | Fallon | NV | Cascade to Fallon Municipal |
| Grand Coulee Dam (GCD) | Electric City | WA | Cascade to Grand Coulee Dam |
| Spokane International (GEG) | Spokane | WA | Cascade to Spokane International |
| South Big Horn County (GEY) | Greybull | WY | Cascade to South Big Horn County |
| Gansner Field (GNF) | Quincy | CA | Cascade to Gansner Field |
| Gooding Municipal (GNG) | Gooding | ID | Cascade to Gooding Municipal |
| Great Falls International (GTF) | Great Falls | MT | Cascade to Great Falls International |
| Grants Pass (GTP) | Grants Pass | OR | Cascade to Grants Pass |
| Hermiston Municipal (HES) | Hermiston | OR | Cascade to Hermiston Municipal |
| Portland/Hillsboro (HIO) | Portland | OR | Cascade to Portland/Hillsboro |
| Helena Regional (HLN) | Helena | MT | Cascade to Helena Regional |
| Idaho Falls Regional (IDA) | Idaho Falls | ID | Cascade to Idaho Falls Regional |
| Jackson Hole (JAC) | Jackson | WY | Cascade to Jackson Hole |
| Grant County Regional/Ogilvie Field (JDA) | John Day | OR | Cascade to Grant County Regional/Ogilvie Field |
| Southwest Washington Regional (KLS) | Kelso | WA | Cascade to Southwest Washington Regional |
| Jackpot/Hayden Field (KPT) | Jackpot | NV | Cascade to Jackpot/Hayden Field |
| La Grande/Union County (LGD) | La Grande | OR | Cascade to La Grande/Union County |
| Logan-Cache (LGU) | Logan | UT | Cascade to Logan-Cache |
| Lake County (LKV) | Lakeview | OR | Cascade to Lake County |
| Crater Lake-Klamath Regional (LMT) | Klamath Falls | OR | Cascade to Crater Lake-Klamath Regional |
| Hunt Field (LND) | Lander | WY | Cascade to Hunt Field |
| Derby Field (LOL) | Lovelock | NV | Cascade to Derby Field |
| Mission Field (LVM) | Livingston | MT | Cascade to Mission Field |
| Wells Municipal/Harriet Field (LWL) | Wells | NV | Cascade to Wells Municipal/Harriet Field |
| Lewiston-Nez Perce County (LWS) | Lewiston | ID | Cascade to Lewiston-Nez Perce County |
| Lewistown Municipal (LWT) | Lewistown | MT | Cascade to Lewistown Municipal |
| Madras Municipal (MDJ) | Madras | OR | Cascade to Madras Municipal |
| Medford/Rogue Valley International (MFR) | Medford | OR | Cascade to Medford/Rogue Valley International |
| Malad City (MLD) | Malad City | ID | Cascade to Malad City |
| Missoula International (MSO) | Missoula | MT | Cascade to Missoula International |
| Grant County International (MWH) | Moses Lake | WA | Cascade to Grant County International |
| Nephi Munivipal (NPH) | Nephi | UT | Cascade to Nephi Munivipal |
| Nervino (NVN) | Beckwourth | CA | Cascade to Nervino |
| Ogden/Hinckley (OGD) | Ogden | UT | Cascade to Ogden/Hinckley |
| Olympia Regional (OLM) | Olympia | WA | Cascade to Olympia Regional |
| Omak (OMK) | Omak | WA | Cascade to Omak |
| Ontario Municipal (ONO) | Ontario | OR | Cascade to Ontario Municipal |
| Newport Municipal (ONP) | Newport | OR | Cascade to Newport Municipal |
| Tillamook (OTK) | Tillamook | OR | Cascade to Tillamook |
| Snohomish County/Paine Field (PAE) | Everett | WA | Cascade to Snohomish County/Paine Field |
| Eastern Oregon Regional Pendleton (PDT) | Pendleton | OR | Cascade to Eastern Oregon Regional Pendleton |
| Portland International (PDX) | Portland | OR | Cascade to Portland International |
| Pocatello Regional (PIH) | Pocatello | ID | Cascade to Pocatello Regional |
| Powell Municipal (POY) | Powell | WY | Cascade to Powell Municipal |
| Prineville (PRZ) | Prineville | OR | Cascade to Prineville |
| Tri-Cities (PSC) | Pasco | WA | Cascade to Tri-Cities |
| Pullman/Moscow Regional (PUW) | Pullman | WA | Cascade to Pullman/Moscow Regional |
| Provo Municipal (PVU) | Provo | UT | Cascade to Provo Municipal |
| Bremerton National (PWT) | Bremerton | WA | Cascade to Bremerton National |
| Roseburg Regional (RBG) | Roseburg | OR | Cascade to Roseburg Regional |
| Roberts Field (RDM) | Redmond | OR | Cascade to Roberts Field |
| Riverton Regional (RIW) | Riverton | WY | Cascade to Riverton Regional |
| Montague-Yreka Rohrer Field (RKC) | Montague | CA | Cascade to Montague-Yreka Rohrer Field |
| Rock Springs Sweetwater County (RKS) | Rock Springs | WY | Cascade to Rock Springs Sweetwater County |
| Richland (RLD) | Richland | WA | Cascade to Richland |
| Reno/Tahoe International (RNO) | Reno | NV | Cascade to Reno/Tahoe International |
| Renton Municipal (RNT) | Renton | WA | Cascade to Renton Municipal |
| Roundup (RPX) | Roundup | MT | Cascade to Roundup |
| Rexburg-Madison County (RXE) | Rexburg | ID | Cascade to Rexburg-Madison County |
| Shelby (SBX) | Shelby | MT | Cascade to Shelby |
| Seattle Tacoma International (SEA) | Seattle | WA | Cascade to Seattle Tacoma International |
| Felts Field (SFF) | Spokane | WA | Cascade to Felts Field |
| Sanderson Field (SHN) | Shelton | WA | Cascade to Sanderson Field |
| Siskiyou County (SIY) | Montague | CA | Cascade to Siskiyou County |
| Salt Lake City International (SLC) | Salt Lake City | UT | Cascade to Salt Lake City International |
| Salem Municipal/Mcnary Field (SLE) | Salem | OR | Cascade to Salem Municipal/Mcnary Field |
| Lemhi County (SMN) | Salmon | ID | Cascade to Lemhi County |
| Friedman Memorial (SUN) | Hailey | ID | Cascade to Friedman Memorial |
| Sunriver (SUO) | Sunriver | OR | Cascade to Sunriver |
| Susanville Municipal (SVE) | Susanville | CA | Cascade to Susanville Municipal |
| Ed Carlson Memorial Field - South Lewis County (TDO) | Toledo | WA | Cascade to Ed Carlson Memorial Field - South Lewis County |
| Hot Springs County-Thermopolis Municipal (THP) | Thermopolis | WY | Cascade to Hot Springs County-Thermopolis Municipal |
| Tacoma Narrows (TIW) | Tacoma | WA | Cascade to Tacoma Narrows |
| Portland/Troutdale (TTD) | Portland | OR | Cascade to Portland/Troutdale |
| Jefferson County International (TWD) | Port Townsend | WA | Cascade to Jefferson County International |
| Magic Valley Regional/Joslin Field (TWF) | Twin Falls | ID | Cascade to Magic Valley Regional/Joslin Field |
| Winnemucca Municipal (WMC) | Winnemucca | NV | Cascade to Winnemucca Municipal |
| Pincher Creek (WPC) | Pincher Creek | AB | Cascade to Pincher Creek |
| Worland Municipal (WRL) | Worland | WY | Cascade to Worland Municipal |
| Yellowstone (WYS) | West Yellowstone | MT | Cascade to Yellowstone |
| West Kootenay Regional (YCG) | Castlegar | BC | Cascade to West Kootenay Regional |
| Princeton Regional (YDC) | Princeton | BC | Cascade to Princeton Regional |
| Yakima Air Terminal/Mcallister Field (YKM) | Yakima | WA | Cascade to Yakima Air Terminal/Mcallister Field |
| Lethbridge (YQL) | Lethbridge | AB | Cascade to Lethbridge |
| Sparwood Elk Valley (YSW) | Sparwood | BC | Cascade to Sparwood Elk Valley |
| Canadian Rockies/Cranbrook Intl (YXC) | Cranbrook | BC | Cascade to Canadian Rockies/Cranbrook Intl |
| Penticton Regional (YYF) | Penticton | BC | Cascade to Penticton Regional |
| Trail (YZZ) | Trail | BC | Cascade to Trail |
| Grand Forks (ZGF) | Grand Forks | BC | Cascade to Grand Forks |
| Nelson (ZNL) | Nelson | BC | Cascade to Nelson |
